D800 matrix metering vs. D600 matrix metering.

Started Feb 11, 2013 | Discussions thread
Daniel Lauring
OP Daniel Lauring Veteran Member • Posts: 9,342
Re: D800 matrix metering vs. D600 matrix metering.

clarnibass wrote:

OK, I had a bit of time to do a test.

I used M mode at ISO 1000, f/4.5 & 1/15 to get an exposure more or less similar to your original D600 example. It turned out a bit darker but not much (I raised and lowered the curtains to try to get it close).

Then I changed to A mode and took the same shot in Matrix. The focus point was on the white part of the pillow. I guess it might be different if I focused on the red/dark areas...

Same ISO and aperture, Matrix chose 0.6 exposure. Then I put the bright bulb in the frame and tried again, Matrix chose 1/5.

The Matrix with no light photo looks correctly exposed, but obviously not at all like what it looked like in the room. It was much darker.

The M photo looks significantly darker than it looked.

The Matrix light photo looks closest to how it actually looked, though maybe a fraction brighter than it did. The photo itself looks a bit underexposed but acceptable. To me half a stop brighter looks best. A whole stop brighter is still ok but considering the light is part of the photo, it looks abit over exposed.

Maybe most important, as you can see the light photo doesn't look anywhere as under exposed as the M mode photo.

Based on the shadows I'm seeing (behind the pillows on the right hand side), from the other light source (not the lamp) it looks like the lamp was no where near the predominant light source in the room.  Try the picture again without the other lights on.  Use the lamp as the predominant light source.  Take a picture with the lamp just out of the photo.  That way it is lighting the room but the cameras light meter can't see it specifically.  Now take a second picture, of the same room, with the lamp entering the corner of the frame.  My D600 would severely underexpose the photo when I did that in matrix metering mode.  The other cameras I had, would barely change the exposure at all.

In the "real world" I'd see this happen, when I was taking a picture in a darkened restaurant, for example.  I'd take a picture of the couple across the table and it would come out perfectly exposed.  I'd swing the camera to the next couple and it would be way underexposed.  The difference would be a light in the upper corner of the frame.  A light that seemed no where near large enough that it should have affected the exposure.

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